Update, no commercial gunsmith would install it and I see why....enough said but I tossed it. Money down the drain, but may have saved my life. I DID send it to "The Sig Armorer" who did a hell of a polish job and improved the trigger immensely. I also ordered some 15 round mags for my G43's and plan to T&E them against the 13 round Sig and see which is which and what is what, and if the two extra rounds in the G43's vs. their normal 10 rounds makes that much of a difference and if the Glock 43 15 rounders are reliable. Will report with my opinion and experiences with them.

FT